var flag = sessionStorage.getItem("guide");
if(flag){
	var str = '<style>.guide{display:none;}body{overflow: inherit;}.modular{display: block;}</style>';
	document.getElementsByTagName('head')[0].innerHTML += str;
}else{
	var length = 0;
	var t = setInterval(function(){
		length++;
		if(length > 60){
			clearInterval(t);
			$('.guide').css({
				'opacity':'0'
			})
			$('.modular').css({
				'display':'block'
			});
			sessionStorage.setItem("guide","ok");
			setTimeout(function(){
				$('.guide').remove();
				$('body').css('overflow','inherit')
			},1000)
		}
	},30);
}
